Statistics

Properties

Received bytes

Total number of bytes received on the serial port.

  • Data type: integer
  • Units: bytes
  • Status

CLI: (cli)> show serial <key> statistics rx-bytes

Transmitted bytes

Total number of bytes transmitted on the serial port.

  • Data type: integer
  • Units: bytes
  • Status

CLI: (cli)> show serial <key> statistics tx-bytes

Framing errors

Total number of framing errors detected on the serial port.

A framing error occurs when the receiver does not see a clean start bit/stop bit data frame. It can be caused by incorrect settings or corruption.

  • Data type: integer
  • Status

CLI: (cli)> show serial <key> statistics framing-errors

Parity errors

Total number of parity errors detect on the serial port.

A parity error occurs when a bit in a data frame is corrupted.It can be caused by incorrect settings or corruption. Parity checking is a very rudimentary form of error checking and only detects some simple errors.

  • Data type: integer
  • Status

CLI: (cli)> show serial <key> statistics parity-errors

FIFO overruns

Total number of fifo overruns.

Fifo overruns occur when to much data is received for the serial port hardware to process and some data is discarded. This can caused by incorrect or no flow control settings.

  • Data type: integer
  • Status

CLI: (cli)> show serial <key> statistics fifo-overruns

Buffer overruns

Total number of buffer overruns.

Buffer overruns occur when to much data is received for the receiving application to process and the systems buffers have filled and extra data is discarded. This can caused by incorrect or no flow control settings preventing the receiving system from informing the transmitting system to pause transmission.

  • Data type: integer
  • Status

CLI: (cli)> show serial <key> statistics buffer-overruns

Serial breaks

Total number breaks.

A break on a serial port means a special 'non-data' bit sequence was received. Breaks are often used to send a special event or notification outside of the normal serial communications.

  • Data type: integer
  • Status

CLI: (cli)> show serial <key> statistics serial-breaks